body { background: url('xx.jpg')top center no-repeat; background-size:cover; }
body
{
background:url('back.jpg');
background-attachment:fixed;
background-repeat:no-repeat;
background-size:cover;
-moz-background-size:cover;
-webkit-background-size:cover;
}
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版權聲明：本文為CSDN博主「Jinx_Q」的原創文章，遵循CC 4.0 BY-SA版權協議，轉載請附上原文出處鏈接及本聲明。
原文鏈接：https://blog.csdn.net/medivhq/article/details/45149619